日期:2012-04-14 16:14
auxiliary complexing agent atcurrent densities ranging from 4．5 A／dm2 t0 32．0 A／dm2．without showing foggy stripe and skip plating in high currentdensity area．A bright deposit having a thickness of 7．33 Ixmwas obtained by addin9 0．1 0 mol／L malic acid as auxiliarycomplexing agent at a current density of 9 A／dmz for 20 min，corresponding to a plating rate of21．96 IIm／h．．Keywords：triValent chromium；sulfate；hard chromiumplating；complexing agent；thickness；deposition rateFirst-auth